The Mosque of al-Zahir Baybars is a mosque built in Cairo, Egypt by the Mamluk Sultan al-Zahir Baybars al-Bunduqdari through his Vizier Bahaa el-Din bin Hanna and Sanjar al-Shuja‘i.

Al-Malik al-Zahir Rukn al-Din Baybars al-Bunduqdari, commonly known as Baibars or Baybars and nicknamed Abu al-Futuh, was the fourth Mamluk sultan of Egypt and Syria, of Turkic Kipchak origin, in the Bahri dynasty, succeeding Qutuz. He was one of the commanders of the Egyptian forces that inflicted a defeat on the Seventh Crusade of King Louis IX of France. He also led the vanguard of the Egyptian army at the Battle of Ain Jalut in 1260, which marked the first substantial defeat of the Mongol army and is considered a turning point in history.